如何从sqlite中删除表中的所有行？

Question

我做这样的行r不是从数据库delete一个：

public void deleteTable(String tablename) { 
    database.execSQL("delete * from "+ tablename + ';'); 
} 

Answer 1

尝试database.execSQL("DELETE FROM " + tablename);

Answer 2

最好的办法删除所有行是：

database.execSQL("TRUNCATE TABLE " + tablename + ";"); 

Answer 3

DeleteAll -

public void deleteAll() 
{ 
    SQLiteDatabase db = this.getWritableDatabase(); 
    db.delete(tablename,null,null); 
    db.close(); 
} 

无论您想要删除数据库。

Answer 4

试试这个代码，这会从表

public void delete() 
{ 
      String DELETEPASSCODE_DETAIL = "DELETE FROM tablename;"; 
      database.execSQL(DELETEPASSCODE_DETAIL); 
} 

Answer 5

的另一种方式是mDb.execSQL（ “DROP TABLE表名”）删除所有行;

并由mDb.execSQL重新创建它（“CREATE TABLE table_name”）;